Extension comb for laying underground electric conduits



Nov. 29, 1927.

. c. D. HEALY EXTENSION COMB FOR LAYING UNDERGROUND ELECTRIC CQNDUITS Filed Aug. 9, 1926 Inventor (rneZz'us DL/aZ Attorney Patented Nov. 29, 1927.

i T s CORNELIUS DENIIIS HEALY, OF NEWARK, NEW JERSEY.

EXTENSION COMB FOR LAYI NG UNDERGROUND ELECTRIC CONDUITS.

Application filed August 9, 1926. Serial No. 128,285.

The present invention relates to acomb The object of the invention is to provide a device of this nature which will hold the conduits properly spaced while concrete is being poured about them and which will as sist in reinforcing the concrete. f

Another important ob'ect of the invention is to provide a comb of this nature which is adjustable, one section sliding in relation to the other.

A still further very important object of the invention comprises the provision of a device of this nature having an inexpensive structure that is easily manipulated, compact, convenient, efficient and reliable, and otherwise well adapted to the purpose for which itis designed. With the above and numerous other objects in view as will appear as the description proceeds, the invention resides in certian novel features of construction, and in the combination and arrangement of parts as will be hereinafter more fully described and claimed. p

In the drawing Figure l is an elevation of the invention,

Fig. 2 is an end view thereof, and

Fig. 8 is an elevation of one section thereof.

Referring to the drawing in detail, it will be seen that the letter A denotes one section and letter B the othersection. The section A includes a body .5 of elongated structure having a longitudinally extending groove 6 "formed therein and a right angularly extending longitudinal flange 7 at one edge. Extending from the other edge of the body are a plurality of spacing legs 8. The section B includes an'elongated body 9 having a. channeled flange 10 formed on one edge and extending longitudinally thereof for slidably receiving the flange 7. From the other edge of the body 9, there extends the spacing legs 11 similar to legs 8.

it will thus be seen that the sections may be adjusted in relation to each other for lengthening or shortening the device as may be desirable depending upon the number of conduits to be held-thereby. The conduits are indicated in dotted linesas disposed beif I claim as new is tween the legs, thus being properly spaced and held in place while the concrete is being poured. g

It will be seen that the device may be manufactured at a very small costand yet will prove thoroughly eflicient and reliable inuse and strong and durable.

The conduits are sometimes laid in two, 6 three, or four flats. This extension comb can be used in all of these ways. The teeth are preferably about one and one-half inches in width, therefore, it gives one and one-half inches of concrete between each conduit. 65 The concrete is used for a protection, in case one of the cables is blown up, thewalls of' the concrete will protect the others. The comb also holds the conduit in place, while the wet concrete is being poured.

It is thought that the construction, utility, and advantages of this invention will now be clear to thoseskilled in this art without a more detailed description thereof. Apparently, numerous other embodiments of the invention may be made and numerous changes in the details of construction 'and in the combination andarrangement of parts may be resorted to without departing from the spirit or scope of the invention as hereso inafter claimed, or sacrificing any of its advantages.

Having thus described my invention, what 1. An extensible comb structure for lay- 85 ing underground electric conduits including a pair of sections one provided with a laterally extending flange at its upper edge, the other provided with a channeled flange extending laterally therefrom in a direction opposite to the first flange for slidably receiving said first flange to hold said sections in spaced parallelism, and a plurality of legs on each section extending downwardly from the lower edge thereof in spaced relation.

2. An extensible comb structure for laying underground electric conduits including a pair of sections, means for slidably connecting the sections in spaced parallelism, a plurality of spacing legs depending from each section in spaced relation to each other.

In testimony whereof I aflix my signature.

CORNELIUS DENNIS HEALY. 

